Hierarchical and recursive queries in SQL

Known as: SYS CONNECT BY PATH, CONNECT BY ISCYCLE, With (SQL)

A hierarchical query is a type of SQL query that handles hierarchical model data. They are special case of more general recursive fixpoint queries…

Papers overview

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2016

Extending RDBMS technology to achieve performance and scalability for queries that are much more powerful than those of SQL-2 has…

2016

In TREC 2016, we focus on tackling the challenges posed by the Dynamic Domain (DD) track. The goal of the TREC DD track is to…

2014

In OBDA an ontology defines a high level global vocabulary for user queries, and such vocabulary is mapped to (typically…

2013

: The user of relational database requires the hierarchy of information/tuples from the relation. This information/tuples is…

2008

Standard databases convey Reiter’s closed-world assumption that an atom not in the database is false. This assumption is relaxed…

2005

2002

1995

In a heterogeneous database system, a query for one type of database system (i.e., a source query) may have to be translated to…

1993

The execution of logic queries in a distributed database environment is studied. Conventional optimization strategies, such as…

1987

Well-known results on graph traversal are used to develop a practical, efficient algorithm for evaluating regularly and linearly…